Ice-cream freezer.



F. TYSON. ICE CREAM FREEZER. APPLIOATION FILED 001231. 1908.

Patented June 1, 1909.

4 SHEETS-SHEET 1.

F. TYSON. ICE CREAM FREEZER.

APPLICATION FILED 0OT.31, 1908.

Patented June 1, 1909.

4 SHEETS-SHEET 2.

r F. TYSON, ICE CREAM FREEZER. APPLIOATiON FILED 001'. a1, 1908.

Patented June 1, 1909.

I 4 SHEETS-SHEET 3.

F. TYSON. ICE CREAM FREEZER. APPLICATION FILED 00T..31, 1908.

Patented June 1, 1909.

4 SHEETS-SHEET 4.

UNITED 'sT'i irns PATENT OFFICE.

FRANK TYSON, OF CANTON, OHIO.

ICE-CREAM FREEZER.

Specification of Letters Patent.

Patented June 1, 1909.

Application filed October 31, 1908. Serial No. 460,396.

To all whom it may concern-.-

Be it known that I, FRANK TYsoN, a citizen of the United States, residing in Canton, Ohio, have invented certain, Improvements in Ice-Cream Freeze-rs, of which t l to following is a specification.

My invention relates to that class of ice and a minimum amount of labor, the ma- .chine having been especially designed for use by those who make ice cream or other frozen products on a relatively small scale.

In the accompanying drawings, Figure l is a view, partly inside elevation and partly in longitudinal section, of an ice cream freezer constructed in accordance with niy invention; Fig. 2 is a plan or top view of the same; Fig. 3 is an end view looking in the direction of the arrow at, Fig.1; Fig, 4 is a transverse section on the line aa-, Fig. 1, and Fig. 5 isa longitudinal section of the main body or casingof the apparatus, with portions of the cream receptacle cut away in order to show the structure of certain parts of the. receptacle which surrounds the same.

In the drawings, 1 represents part of the supporting framework, which carries a plate 2 upon which the freezer and the operating mechanism therefor are mounted and to which they are secured in any desirable Way.

The cream receptacle is represented at 3,1

and is mounted in and secured to an outer receptacle 4 so as to prov de a water-tight oint between the two, a result which is preferably secured by expanding the ends of the receptacle 3 into suitable recesses in the ends of the receptacle 4, to "which recesses the oppositeheads 5 and 6 of said receptacles are also fitted. V

Within the receptacle 4 are two chambers 7 and 9, the chamber 7 surrounding the cream receptacle 3 and having a transverse partition 10 which contacts with said cream receptacle and serves to separate the inlet end of the chamber 7 from the outlet end of the same, the inlet passage 1 communicating with a boss 12 atone end of the recep-f tech 4 and the outlet being provided with a perforated delivery plate 13, as shown in Figs. 4 and 5. The chamber J occupies the base of the -receptacle'4 beneath that portion of the same which envelops the lower half of the chamber 7, and said chamber 9 communicates at one side of the freezer with a hopper 14-, the latter receiving in its upper portion the refrigerating liquid discharged from'the chamber 7 through the perforated delivery plate 13.

'lhe/cream receptacle 3 is provided with dashe'r mechanism ]5 of any appropriate character, the dashcr shat-t l6 havlng at one end an inclosed bearing in the head 6 and passing at its opposite end through a stniling box 17 on the head 5.

Mounted upon the base 2 at this end of the machine is a structure 19 provided at the top 'with the lower member 20 of the bearingfor the reduced outerend .of t he v haft l6, this-bearing l'iavii'ig a suitable detachable cap 21, and both members of the bearing being enlarged centrally, as shown at '22, to accoinmodate that member 23 of the driving gearing which is carried by the shaft 16. This gearing may be of any desirable clu-iracter, wheels having inclined and intcrmeshing teeth being preferreil. Also forming part. oi -the structure 19 is a bearing 24 for the driving shaft which is provided with the usual fast and loose pulleys '26 and 27," r other nieansfm' applying power thereto. The bearing 21 is enlarged, as shown at '29; and this'enlargcd' portion is provided with a detachable face plate or cap 30, shown inlig. l, and provides a chamber for'tho reception of that member 31 of the driving gearing which is carried by the shaft 25 (see'Fig. 3).

To a face plate 32 at the outer end of the structure 19 is secured the casing 33 of a rotary circulating pump whose rotating mom her is carried by the shaft 25, said circulating pump having an inlet pipe 34 and a discharge pipe 35, the inlet pipe communicating with the chamber 9 of the receptacle 4 and the discharge pipe 35 communicating with the inlet iassage ll of the chamber 7, as shown in l igs. 2 and 3.

At one side of the receptacle 4 and com municating with the chamber 9, is an overflow and centrally disposed in said chamber 9 is 'a'longitudinal partition 37 dividing said chamber into two' arts which, however, can communicate. free'y with one another through one or more openings 39 in said partaining a brine producing chamber and n tition, as shown in Fig. 4.

Inoperatmg the freezer the front portion of the chamber 9 and the hopper 14 com 1 municating therewith are filled with a mixture oice and salt, and as soon as the ice is", melted sufficiently to produce a proper vol 2 nine of brine in the chamber 9 power is ap i plied to the shaft 25 so as to operate the circulating pump and start a circulation of said brine t ough the chamber 7 ,the discharge of the brine into the upper portion of the hoper 14 after it has circulated around the easmg 3 serving to continue the melting of the v ice, the hop or being replenished from time to time witi additional supplies of ice and salt, and the level of the brine being maintained at orbelow the level of the overflow 36. The use of the longitudinal partition 37 in the brine chamber 9 serves to reduce the amount of ice required without restricting the ca acity of the brine chamber, it bein advisafle to keep the hopper 14 fairly wel filled with ice in order that the brine discharged from the outlet 13 of the chamber 7 may impinge upon said ice. When the shaft 25 is started it will also start the rotation of the dasher shaft 16 and as soon as a proper circulation of brine in the chamber 7 has been established the cream or other mixture to be frozen may be introduced into the cream receptacle through the feed hopper 40 at the upper portion of the head 6, and when the To prevent or lessen the abstraction of heat by the brine from the receptacle 4 all ortions of said receptacle outside of the limits of the hopper 14 are, by preference, provided with an outer casing or jacket 43, preferably of sheet metal, which may thus provide between itself and the receptacle 4 a dead-airchamber or a chamber to be filled with material which is a non-conductor or a poor conductor of heat.

The construction which I have devised permits of the use of the same shaft for drivmg both the brine circulating pump, and the dasher shaft of the freezer, and it shortens the pipeconnections between the brine producer and the brine circulating chamber of the freezer and provides for such a compact disposition of the parts as to materially reduce the labor of attendance as compared with that required in apparatus in which the freezer, brine producer and brine pump are separated and independently operated structures.

I claim:

1. The combination, in anice cream freezer, of a cream receptacle and an external receptacle carrying the same and. con-'' brine circulating chamhcrin which the ('icnm receptacle is disposed.

lating ciamber', in which the cream receptacle disposed, and means for conveying brine from the producer clnnnlmr to the vi!" culating chamber and bani; again.

3. The combination, in an ice cream freezer, of acream receptaclefan external receptacle carrying the same and containing a brine producing chamber and a biine circulating chamber in which the cream rcceptaclc is disposerhand means, including a onculating pump, for conveying brine from the roducer chamber to thecirculating chamlier and back a ain.

4. The com ination, in an ice cream freezer, of a horizontal cream receptacle, and an external receptacle surrounding said cream receptacle and forming a brine circulating chamber around the same, said external receptacle having, in its lower portion, a brine producing chamber.

5. The combination, in an ice cream freezer, of a creamreceptacle, and an exter nal receptacle inclosing the same, and a brine circulating chamber in which the cream receptacle is dis osed, said external receptacle also having a rine producing chamber with ice-receiving hopper at one side of the same.

The comblnation, in an, ice cream freezer, of a cream receptacle and an exter nal receptacle inclosingthesame and rov-iding a brine circulating chamber in wiiich said cream receptacle is disposed, said external receptacle having a brine producing chamber with ice-receiving hopper at one side of the same, and a longitudinal partition dividing it into two portions, one of which communicates with said ice-receiving hopper. 7. The combination, in an ice cream freezer, of a cream receptacle and an external receptacle containing a brine producing chamber with ice-receiving hopper at one side of the same, said external rcce tacle also inclosing a brine circulating cham )er in which. the cream receptacle which latter chamber discharges into the ice-receiving ho per.

8. The com mation, in an ice cream freezer, of a'cream receptacle, an external receptacle containing a brine circulating chamber in which the cream receptacle is disposed, a brine producer, connections, including a rotary circulating pump, between said brine roducer and the brine circulating chamber, asher mechanism located within the cream receptacle, and a single shaft which drives the latter mechanism and is directly connected to the rotary member of the brine circulating; pump.

is disposed,

5 disposed, theexternal rece tacle out 10 her, an

freezer, of a cream receptacle, an external I receptacle containing a brine circulating chamber in which the cream rece tacle is aving a lon itudinal partition where y its inlet and i it portions are separated from one another, a brine producer which receives the dischar e from said brine circulating cham- (l flow connections between said brine producer and the inlet end I culating chamber. I 10. The combination, in an ice cream! freezer, of a cream receptacle, an external 1 of the brine cirreceptacle containing a brine circulating chamber 1n which said cream receptacle is disi posed, a brine producer, connections, includmg a circulating ump, between said brine producer and the rine circulating chamber, and a structure having bearings for the dasher shaft of the freezer and for the driving shaft, and also having a face plate to which the casing of the circulating pump is attached.

In testimony whereof, I have signed. my name to this specification in the presence of two subscribing witnesses.

FRANK TYSON.

. Witnesses:

H. B. STEWART, ISAAC H. TAYLOR. 

